Pump for raising liquids by compressed air.



N0.7zs,74s. A PATBNTBD mm2/1,1903.

0.1". SIMON.

I PUMP FOR RAISING LIQUIDS BY COMPRBSSED AIR.

APPLIoATloN Hmm JULY za, 1902.

' UNITED STATESA PATENT OFFICE.

CARL FRIEDRICH SIMON, OF STOLLBERG, GERMANY, ASSIGNOR TO CHEM ISCHE FABRIK RHENANIA, OF AACHEN, GERMANY.

PUMP FOR RAISING LIQUIDS BY COMPR'ESSED AIR.

SPECIFICATION forming part of Letters Patent No. 723,743, dated March 24, 1903. Application filed July 28,1902. Serial No. 1`17,399. (No model.)

To all whom. it may concern:

Be it known that I, CARL FREIDRICH SIMON, a citizen of Germany, residing at Stollberg,-

Germany, have invented a certain new and useful Pump for Raising Liquids by Compressed Air, (for which I have'made applica? tion for a patent in Germany, dated July 2,4, 1901,) of which the followingis aspecification. The present invention relates to a pump in which the distributing-valve is a balanced piston moved, on the one hand, bya part of the air contained in the vessel forholdin g the liquid, which air is compressed by the liquid to be raised, and, on the other hand, by com-v pressed air from the pipe or reservoir which supplies the air for raising the liquid.

In the accompanying drawings, Figure lis a longitudinal section of the distributingvalve mechanism. Fig. 2 is a transverse section on line A B of Fig.' 1, and Fig. 3 is an elevation of the container with its liquid and compressed-air connections.

The liquid to be raised flows through pipe b, which has a check-valve c, into the empty container a. The air thus displaced escapes for the greater part up the pipe d and through the pipe c, which is above the valve f, the latter being open while the liquid is {iowing into the container. A small part of the displaced air, however, is confined in the pipe g, which opens below the piston h, and is there compressed. The length of the part of the pipe g that extends into the container is so adjusted that at the moment when the container is full of liquid the pressure on the under side of the piston is suflicient to raise the latter, and thus to close `the valve f, and hence the pipe d. At the same time this movement of the piston opens the pipe p,

which supplies compressed air, and the latter flows by way of pipes t' and d into the container, whereupon check-valve c is closed and the liquid is raised up pipe k. The said movement of thepistonh puts into communication the compressed-air chamber and the vessel n, through the channel Vfm, provided with a regulating-valve Z. Compressed air at once passes into n and gradually produces a pressure therein which is regulated by valve 0 not to exceed a certain maximum-namely, a pressure insufficient to move the piston h against the pressure that is raising the liquid. When the level of the liquid in the container has fallen below the lower end of the pipe k,

the Yair in the container expands through this pipe, and the pressure in the vesseln is able to move the piston h back into the position in which the valve f is open, and the pipe p and the channel m are closed. As compressed air can no longer enter the container 0 the air therein expands to atmospheric pressure, and the check-valve c opens to admit more liquid. The pressure in the vessel n also now falls to that of the atmosphere, with whichv it Is 1n communication both through valve 0 and opening q, which is opened by the backward movement of the piston. The cycle of operations now repeatszitself. v

By means of the channel t, with its regulating-valve s, the pressure under the piston after the valve f is closed can be maintained at such a point as will prevent premature opening of the valve f and also the entrance into the cylinder of any portion of the liquid trapped in pipeg or vapors therefrom.

Having thus described the nature of this invention and the best means I know of carrying the same into practical effect, I claim- 1. In a pump for raising liquids by compressed air, a distributing-valve, means for directinga pressure of air entrapped and compressed by the liquid as it iiows into the container against said valve to move it in one direction, and means adapted during the raising of the liquid from the container to direct a pressure of air from a compressed-air supply against the valve to move it in the opposite direction.V

2. In a pump for raising liquids by compressed air, a distributing-valve, means for directing a pressure of air entrapped and compressed by the liquid as it iiows into a container against said valve to move it in one direction, means adapted during the raising of the liquid from the container to direct a pressure of air from a compressed air supply against the valve to move'it in the opposite direction, and suitable connections between the compressed-air supply and the means for directing the entrapped air in the container against the valve.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- IIBSSCS.

CARL FRIEDRICH SIMON. Witnesses:

JOHN B. ADAMS, HEINRICH RssING.

IOO 

